BangkokDean
Well-known member
When driving on the highway at speed the oil pressure pegs the needle and normal driving the pressure is very high. Is there an easy way to reduce the pressure?
too much oil presure
- Thread starter BangkokDean
- Start date
69427
The Artist formerly known as Turbo84
What viscosity oil are you presently running?
SuperBuickGuy
Well-known member
zero weight could help you.... that said... be sure it's not just the sender telling your gauge the oil pressure is high
mrvette
Phantom of the Opera
I would try another mechanical gauge first.....
then maybe the relief valve/spring where the filter screws on the block, two? bolts and it comes off, possible hang up in there....
filter itself?? I can't see how, but.....:clobbered:
then maybe the relief valve/spring where the filter screws on the block, two? bolts and it comes off, possible hang up in there....
filter itself?? I can't see how, but.....:clobbered:
MYBAD79
Moderator
First check the pressure with another sending unit and or gauge .....
The pump puts out the same volume so the pressure can only increase with oil viscosity or there's an obstruction in the line ....
The pump puts out the same volume so the pressure can only increase with oil viscosity or there's an obstruction in the line ....
BangkokDean
Well-known member
The sending unit is new also the gauge. 6 months ago I had little to no pressure so I changed out 2 new sending units but it was the gauge that needed to be changed. I have 20w 50w oil in it now.
I will check the pressure with a mechanical gauge next, thanks.
I will check the pressure with a mechanical gauge next, thanks.
Twin_Turbo
Der Maulwurf
- Joined
- Mar 5, 2008
- Messages
- 7,575
Why do you have 20W50? Does the engine run so hot that the oil thins out a lot? Get some 10w40 and check again with a MECHANICAL gauge
kwplot34
Heart Attack
I agree with TT.
BangkokDean
Well-known member
If I lived in a cold country that would work but over here it is hot all the time and in city stop and sometime go traffic. Oil thins out too much. In my Harley I could not use Synthetic oil as the lifters would collapse do the thinning out due to heat, I could only use straight 50 or 60 weight. I have used this weight oil for years in the Vette without a problems.
Belgian1979vette
Well-known member
10W40 and see what it brings.
If not, pull the pan and check the pump. Consistent high pressure is not good.
If not, pull the pan and check the pump. Consistent high pressure is not good.
BangkokDean
Well-known member
I will be looking for the problem this coming week and let you all know what I find.Thanks
BangkokDean
Well-known member
At idle the stock needle is at 90% and on the high way the needle is bending due to there is no place to go any higher.:suicide:
MYBAD79
Moderator
So the pressure is always high and increasing with rpm ? Sounds like the pressure relief/bypass is plugged up ... Pull the pan ....
BangkokDean
Well-known member
Well I fixed the oil pressure problem. Dropped the pan and the oil pump and put a lighter spring in it painted the scraped up pan added 20w-40w and all is good now. :yahoo:
